steps / idea for a Iphone passcode like custom interface for Application

Question

Can someone shed some light on creating a iphone passcode like interface? Is there any API to reuse the Iphone passcode for application?

Answer 1

Use a grid of custom UIButton views inside a parent UIView. You might put this into a modal view controller to make it more like an "authentication" pop-up.

You might hook up your passcode data model to the iPhone Keychain, to keep privileged data secure. The Scifihifi wrapper methods are really useful for this purpose.